Opening files through Explorer in one instance

[jespencer7]

Hi - have a new laptop and after the reinstall of Microsoft Office... when I open my excel files through Windows Explorer they open in separate instances. Every file opens in a new instance. they uses to open in the same instance.

I can get them to open in the same instance by opening one file then file/open and navigate to the file I want to open in the same instance (so formulas, etc. work) but I am so used to using explorer to open files and I find it much faster but I can't figure out how to get the files to open in the same instance (as the default). Thank you!